docs: def as_strings(self):
          """Return the entire Conf as nginx config strings."""
          ret = []
          for x in self.children:
              if isinstance(x, (Key, Comment)):
                  ret.append(x.as_strings)
              else:
                  for y in x.as_strings:
                      ret.append(y)
          if ret:
              ret[-1] = re.sub('}\n+$', '}\n', ret[-1])
          return ret